What symptom does tumor of right temporal lobe have?
summary
The incidence of temporal lobe tumors is only lower than that of frontal lobe tumors. In order to avoid this, female friends must take precautions. The most common tumors were gliomas, accounting for 17.96% of the total number of intracranial gliomas, followed by meningiomas, accounting for 5.42% of the total number of intracranial meningiomas. Most of them are adults, but the gender difference is not obvious. What are the symptoms of right temporal lobe tumor? What about it? Let's take a look at it.
What symptom does tumor of right temporal lobe have?
The first is the change of visual field; The change of visual field is often one of the early symptoms of temporal lobe tumor, which has localization significance. Anatomically, the optic radiation passes through the temporal lobe around the inferior horn of the lateral ventricle. When the tumor is located in the deep part of the temporal lobe, due to the contamination or damage of the optic tract or optic radiation, the disease may initially present a contralateral ipsilateral upper quadrant 1 / 4 visual field defect. When the tumor continues to grow, the quadrantal defect can develop into homonymous hemianopia. This kind of hemianopia may be complete or incomplete, bilateral symmetry or asymmetry. For example, in the posterior temporal lobe tumor, hemianopia is mostly symmetrical.
Second, sensory aphasia; When tumors located in the upper hemisphere invade the 41 and 42 areas of the superior temporal gyrus, they may present sensory aphasia. When the posterior part of temporal lobe is invaded, there may be naming aphasia. This is one of the most reliable symptoms for the diagnosis of temporal lobe tumors. These patients lost their ability to understand other people's language and name things, but they preserved their ability to speak. Nevertheless, they often had the special symptoms of wrong words, wrong words, and even slander. When it's important, the patient's conversation is complete and can't be understood. At the same time, the patient can't understand other people's language. Amnestic aphasia is often a manifestation of temporal lobe aphasia. The patient has difficulty naming the object, but can only describe the special symptoms or use of the object. When clarifying the name of the object, the patient can know whether it is true. Clinical diagnosis confirmed that amnestic aphasia is often part of the early manifestation of sensory aphasia. In addition, when temporal lobe tumors develop to parietooccipital region, they often show some symptoms, such as loss of reading, loss of writing, impossibility of calculation and loss of vision.
Third, epileptic seizure; The incidence of seizures caused by temporal lobe tumors is second only to frontal lobe tumors. Some patients may also present with localized seizures, which are mainly caused by the tumor invading the motor area upward. The special symptoms of temporal lobe epilepsy are various premonitions and complex symptoms, such as blurred consciousness, speech disorder, energy and motor pleasure, emotional and directional disorder, hallucination, illusion, memory impairment, etc. The basic symptom was memory disorder. Memory is far memory, near memory and present memory. When tumors invade more widely than brain tissues, they often show disorientation of time, people and place. When bilateral medial temporal lobe tumors infect the hippocampal gyrus, the present memory impairment is obvious. Some patients with temporal lobe epilepsy show a sense of familiarity with the place they have never been to (a sense of familiarity with the environment) or a very familiar place (a sense of strangeness with the environment). Some patients show visual hallucinations such as visual deformation (dysopia) and visual enlargement (macropsia). The cortical representative area of hearing is in the transverse temporal gyrus. When the patient is auditory hallucination, he can hear the sound increasing or decreasing, clock sound, singing, drum sound, noise, etc. Auditory hallucination is often accompanied by vestibular cortical vertigo and paroxysmal aural call. The representative area of taste is in the lowest part of the precentral gyrus, which is rarely damaged to cause taste disorder, but may present phantom taste when stimulated.
matters needing attention
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